Eldorado Springs, CO has a population of 935 and is the 15,555th largest city in the United States. The population density is 362 per sq mi which is 627% higher than the Colorado average and 299% higher than the national average. The median age in Eldorado Springs is 50 which is approximately 37% higher than the Colorado average of 36. In Eldorado Springs, 68% of the population over 15 years of age are married, 98% speak English and 2% speak Spanish. 25% of Eldorado Springs residents were born in Colorado, 73% were born out of state, 1% were born outside of the United States and 1% were foreign born.